Phosphorus sources (P) plus filter pie with or without azotofos on the available P in the soil

Phosphorus sources (P) plus filter pie with or without azotofos on the available P in the soil

Maikel Abreu Jiménez, Enrique Parets Selva, Leónides Castellanos González, Leandro Rosatto Moda, Renato de Mello Prado, Aida Margarita Romero Jiménez, Rene Cupull Santana

The objective of the investigation was to evaluate the effect of four phosphorus sources plus filterpie with or without the biofertilizer Azotofos on the available phosphorus in the soil at different moments afterthe treatment. An experiment in factorial design 4(2)+1 was established, being the four phosphorus sources:rock phosphate, natural phosphate, triple phosphate and Cuban phosphoric rock; two sources of the organiccompound to base filter cake enriched with Azotofos microorganisms, only filter cake (without enrichment) anda control treatment (without filter pie, neither Azotofos), with three repetitions. The evaluations of the tenor ofavailable P (Bray-2) were carried out at the 30, 60, 90, 120 and 150 days after the installation of the experiment.The tenor of P (Bray-2) was influenced by the sources of P and the enrichment with biofertilizantes (factorial)increasing the tenor of available P in front of the control. The triple superphosphate promoted the higher tenorsin P in the soil at 60 and 90 days after its application, independently of the presence or not of the organiccompound enriched with P solubilizing microorganisms, although this effect didn’t stay stable at the time.

2014

Filter cake, Phosphorus source, assimilable phosphorus, biofertilizers

Centro Agrícola

Universidad Central Marta Abreu" de Las Villas"

Agriculture (General), Plant ecology